Diagnostic device



FIG. 1 is a top, front, right perspective view of an embodiment of the claimed design;

FIG. 2 is a top, front, left perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a left elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings are for purposes of illustrating unclaimed portions of the diagnostic device and form no part of the claimed design. 

CLAIM We claim the ornamental design for a diagnostic device, as shown and described. 